# Proposed AD FAA-2010-1197: Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively Called A300-600 Series Airplanes); and Model A310 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-14-01
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 10, 2010, 75 FR 76926
- Comments due: January 24, 2011
- Became: [AD 2011-14-01](https://openairdocs.org/ad/2011-14-01)
- Docket: FAA-2010-1197 (https://www.regulations.gov/docket/FAA-2010-1197, where comments are filed)
- Project: 2010-NM-044-AD
- FR document: 2010-31040
- Official PDF: https://openairdocs.org/files/sha256/7a/31/7a310786d247fbf4c9f007263f1a711bf09c4cc5d04d52f6977b8683481f6929 (from https://www.govinfo.gov/content/pkg/FR-2010-12-10/pdf/2010-31040.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/12/10/2010-31040/airworthiness-directives-airbus-model-a300-b4-600-b4-600r-and-f4-600r-series-airplanes-and-model
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AC1193FE2663BC6F862577F500529B40.0001
- Page: https://openairdocs.org/proposed/FAA-2010-1197

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

An operator of an A300-600 aeroplane reported finding a cracked pylon fuel drain pipe on engine 1. * * *

* * * The pipe drains the double wall of the wing-to-pylon junction in the event of fuel leakage.

After investigation, it was concluded that the damage of the pylon fuel drain pipe had been caused by chafing of the pipe against over-length screws that had been installed in accordance with the Illustrated Parts Catalogue (IPC) during a maintenance phase of the Lower Aft Pylon Fairing (LAPF).

This condition, if not detected and corrected, could, in combination with fuel leakage in the pylon, lead to an accumulation of fuel inthe lowest point of the LAPF. As high temperatures are present within the LAPF, and without ventilation, this could result in fuel (vapour) ignition and consequent fire.

* * * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Dec 10, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-31040, comments due Jan 24, 2011 (https://www.federalregister.gov/documents/2010/12/10/2010-31040/airworthiness-directives-airbus-model-a300-b4-600-b4-600r-and-f4-600r-series-airplanes-and-model)

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